Which of the following statements is tree about his friend a. Writing exhausts his friend. b. His friend collects a lot of things to write. c. His friend always has enough material to write on. d. His friend is doing research to write a paper.

下列关于益母草的药理作用，错误的是（）

A.兴奋子宫

B.扩张血管

C.抗血栓

D.改善微循环

E.镇静催眠